-- @testpoint: opengauss关键字functions(非保留)，作为函数名，部分测试点合理报错

--关键字不带引号-成功
drop function if exists functions;
create function functions(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
drop function if exists functions;

--关键字带双引号-成功
drop function if exists "functions";
create function "functions"(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
drop function if exists "functions";

--关键字带单引号-合理报错
drop function if exists 'functions';
create function 'functions'(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--关键字带反引号-合理报错
drop function if exists `functions`;
create function `functions`(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/